Guardiola's withering look said it all: "That is not going to happen".
Claudio Bravo saved Riyad Mahrez's spot-kick to seal a 4-3 victory on penalties following a 1-1 draw after extra time.
"That is not going to happen".
"That is not normal".
"Bristol City have won their last four and now sit third in the Championship and I expect them to give United a real game at Ashton Gate although they haven't kept a clean sheet in their last five", Owen told BetVictor.
Having made nine changes to the side that thrashed Tottenham Hotspurs in the Premier League weekend, winger Bernardo Silva scored the opener in the first half, slotting home his second goal of the season following a dazzling run from Ilkay Gundogan.
Guardiola has secured several trebles during his stint at Barcelona and an expectation of a quadruple from the current Manchester City side is not too unrealistic.
"We played not bad until the penalty", Zinchenko concluded.
"I joined when we were in League One with three stands". We can certainly be thankful that it wasn't a City player in that situation.
It was a huge upset for Bristol City against a Manchester United side that fielded the star power of Zlatan Ibrahimovic, Paul Pogba, Anthony Martial and Romelu Lukaku. We played brilliantly like we have all season.
"Obviously yesterday, in the EFL Cup, you could see they were missing players like [Kevin] De Bruyne in the middle, and I just think if they keep those key players fit they sky is the limit this season".